WorksheetsInter School Quiz (English Medium) Paper 04
Total questions: 25
Worksheet time: 15mins
Which of the following statements is false?
Sampling errors are present even in complete enumeration.
Both the Lorenz curve and Ogive are based on cumulative frequencies.
The set of all elements/members included in the field of the statistical study is termed as ‘Sample’.
Individual observations can be identified in an ungrouped frequency distribution.
Which of the following statements is true?
Profile chart is used for comparing a specific situation with the common situation.
The sum of the areas of all the rectangles of a histogram is less than the area under the frequency polygon.
A ‘less than’ ogive falls downwards from left to the right.
The value of Gine coefficient is between 0 - 1.
……………….. is an interviewing technique in which the respondent or interviewer uses an electronic device to answer questions.
Web Site Survey
Audio Computer-Assisted Self Interview (ACASI)
E-mail Survey
Computer-Assisted Personal Interview (CAPI)
The difference of the …………….. of two successive classes (If the class widths are similar) always equals to the class width.
class frequency
class mid-points
lower boundary
upper boundary
In a frequency distribution, if the mean is less than the mode and the median is greater than the mean but less than the mode, then the shape of the distribution is,
negatively skewed
positively skewed
symmetrical
leptokurtic
In the case of symmetrical distribution, the most appropriate measure of central tendency is …………………
mean
standard deviation
mean deviation
median
In the case of a frequency distribution with open-ended classes, the measure of dispersion which can be easily used is,
mean deviation
quartile deviation
standard deviation
range
The third quartile of the series 2, 2, 9, 4, 7, 9, 5, 6, 6 is equals to ……………
7.5
6
7
8
Which of the following statements is false?
Unit of the constant-coefficient is same as the unit of the dependent variable.
Unit of the product movement correlation coefficient is same as the unit of the dependent variable.
Unit of the predicted values is same as the unit of the dependent variable.
Unit of the regression coefficient is same as the unit of the dependent variable.
In simple linear regression analysis, the product movement correlation coefficient was found to be 0.81. What is the value of the coefficient of determination of that data set?
0.9
0.09
0.66
0.81
………………………. of probability includes both classical and relative frequency definitions probability in particular cases.
Mathematical approach
Subjective approach
Classical approach
Relative frequency approach
How many ways to select three students as president, secretary and treasurer respectively among 6 committee members?
6
120
20
40
If A and B are independent events with
P(B′)=32, P(A∩B)=121, P(A)=X then the value of X is,1/3
1/9
2/3
1/4
If X has a Poisson distribution with the mean value as 25. Find the standard deviation of that distribution.
12.5
25
4
5
Which of the following statements is false?
Nn known as the sampling fraction.
Quota sampling can be considered as a non-probability stratified sampling.
Non-sampling error cannot occur in the complete enumeration.
The standard error cannot be calculated in the purposive sampling method.
Which country does not belong to the group of emerging economies known as “E7 Countries”?
China
Brazil
Russia
USA
Who was awarded as the best actor in the 92nd Academic Awards/ Oscar Awards?
Joaquin Phoenix
Leonardo DiCaprio
Tom Hanks
Joe Pesci
What is the currency used in the country denoted by this flag?
Taka
Dam
Peso
USD
How many state universities are there in Sri Lanka?
25
23
15
18
What is the name of the king who made “Anuradhapura Kingdom” as the capital for the first time?
King Vijaya
King Dhutugamunu
King Mutaseewa
King Pandukabhaya
What number should replace the question mark?
5
15
48
35
A man jogs at 6 mph over a certain journey and walks back over the same journey at 3 mph. What is his average speed for his journey?
8 mph
4 mph
6 mph
10 mph
Which of the following is not an anagram of a job or profession?
rein gene
lee crock
can chime
no treaty
Out of 100 women, 83 had a white bag, 77 had black shoes, 62 carried an umbrella and 95 wore a ring. What is the minimum number of women who must have had all four items?
27
15
17
19
At a conference, 12 members shook hands with each other before & after the meeting. How many total numbers of handshakes occurred?
100
66
132
144
